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Old Jan 27, 2003 | 03:38 PM
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FOMOCO Headlight

I came across an old FOMOCO headlight that was in a 1943 Ford GPW. It has 3 terminals so I assume it's a high/low beam light. It has the Westinghouse trademark W on it, so I assume it was made by them for Ford. the GPW has the motor and wiring harness missing so I am not sure it it's a 6v or a 12V light.

Anyone shed some info on these?


thanks
 
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Old Jan 27, 2003 | 07:27 PM
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FOMOCO Headlight

Ford used 6 volt systems through 1955. Anything after is 12 volt. Some of the other manufacturers went to 12 volt prior to 1955.
 
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Old Jan 27, 2003 | 07:47 PM
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FOMOCO Headlight

Would any of the coded markings on the bulb indicate 6V or 12V?
With the popularity of converting a 6V to a 12V over the years, I don't know how the GPW currently wired.
 
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Old Jan 27, 2003 | 08:47 PM
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FOMOCO Headlight

Put 6V to it and see how bright it is. If it's fully lit, don't put 12V across it. If it's dim, you haven't hurt it a bit and it's a 12V bulb.
 
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Old Jan 27, 2003 | 09:52 PM
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FOMOCO Headlight

I had thought of that and was thinking one of my battery chargers was a 6/12 unit, but it's not.


Guess I'll just have to wait..

thanks
 
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Old Jan 31, 2003 | 10:46 PM
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FOMOCO Headlight

Then measure its resistance, find another resistor or light bulb that's the same (regardless of its voltage - it could be a 110VAC bulb or a flashlight bulb, but not less than 6V) and wire them in series so the old one gets 1/2 the supplied voltage, i.e., 6V.
 
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